Problem 1 on current electricity

AI Thread Summary
The discussion revolves around solving a problem related to current and voltage in an electrical circuit involving resistors and a capacitor. Key steps include determining the current and voltage across resistor R2 as functions of time, which are essential for calculating the generated heat using the specified integral formula. Participants emphasize the importance of demonstrating effort before seeking direct answers, aligning with forum policies. The conversation highlights the necessity of applying Kirchhoff's laws and understanding series and parallel resistor equations. Ultimately, engagement in the problem-solving process is encouraged for better learning outcomes.
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Homework Statement



the problem is attached to this post

Homework Equations



Req=1/R1+1/R2+... for parallel and Req.=R1+R2+... for series... Kirchoff's law for Current and Potential to be applied

The Attempt at a Solution


completely lost ... pls help
 

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First you need to find current and voltage across R_{2} as a function of time. Then you can find the generated heat by using the formula

W_{2}=\int^{\infty}_{0}V_{2}(t)I_{2}(t)dt,

where V_{2} and I_{2} are the voltage and current across resistor R_{2}. As you see, time goes from 0 to infinity (when the capacitor is fully charged).
 
N-Gin said:
First you need to find current and voltage across R_{2} as a function of time. Then you can find the generated heat by using the formula

W_{2}=\int^{\infty}_{0}V_{2}(t)I_{2}(t)dt,

where V_{2} and I_{2} are the voltage and current across resistor R_{2}. As you see, time goes from 0 to infinity (when the capacitor is fully charged).

can u give me the answer?
 
anshuiit said:
can u give me the answer?

It's against the policy! You need to show some effort first.
 

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